We initiate the study of multilayer potential operators associated with
any given homogeneous constant-coefficient higher-order elliptic system
in an
open set
satisfying additional assumptions of a geometric measure theoretic nature.
We develop a Calderón–Zygmund-type theory for this brand of singular
integral operators acting on Whitney arrays, starting with the case when
is merely of locally
finite perimeter and then progressively strengthening the hypotheses by ultimately assuming that
is a uniformly
rectifiable domain (which is the optimal setting where singular integral operators of principal
value type are known to be bounded on Lebesgue spaces), and conclude by indicating how this
body of results is significant in the context of boundary value problems for the higher-order
system
in such
a domain
.
Keywords
higher-order system, multilayer operator, boundary layer
potential, Calderón–Zygmund operator, principal value
singular integral operator, set of locally finite
perimeter, Ahlfors regular set, uniformly rectifiable set,
divergence theorem, nontangential maximal operators,
nontangential boundary trace, Whitney arrays, boundary
Sobolev space, Carleson measure, Dirichlet boundary
problem, regularity boundary problem